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Photo: Helicopter prize elusive

Enlarge ImageRequest to buy this photoPatrick Semansky | Associated PressColin Gore, a University of Maryland engineering student, performs a test flight in Baltimore in a helicopter that he and fellow students built in pursuit of the $250,000 American Helicopter Society Sikorsky Prize. To win, a helicopter must fly under human power for at least 60 seconds. The prize has been out of reach since first offered in 1980.